Because they know they would lose in a straight-up fight. That’s why.
In war, you do not fight the way your enemy wishes. That’s something we on the Right need to understand and practice.
The Right needs to understand that we're in a fight, and fight to win. They use our own tax money against us, with their agents being government employees, welfare recipients, recipients of government grants, and union people who depend on the government to secure their jobs and guarantee them well-above-market-wages.
Step one would be to deny the Left its funding and logistics. Cut their funding. Eliminate union privileges. Make them get real jobs.